Thanks everyone for the responses!

Me- There are no restrictions that I am aware of at the moment, will look into that. I have noticed that Soay don't go for a lot, which did but me off a little bit as they wouldn't pay for them selves as much as other breeds would, The next breed I have been looking into the most after the soay were Hibridean's, are they any better price wise? I would like to have a rare breed that needs to be bred, I did look into Boreray, but couldn't find any for sale apart for 3 rams!
Bionic- In my opinion, Ryelands are one of the cutest breeds out there, especially the coloured Ryelands! They don't seem like they would do that well on the 43 acre site as it is quite wet in places, other wise they would be option for me!
Backinwellies- I have actually looked into cattle, Highland cattle at the most. Never read about the Shetland Cattle, I think I'll start with keeping sheep and then see how the conservation grazing goes and then maybe move on too cattle if I feel confident enough. i.e. Tb testing, etc
Quirkygirl- Thanks for the welcome!

I am considering going onto a college course which would help me along the way, as I need to learn as much as my brain can take! It would benefit me I know that.

Rosemary- Thank you!

I don't think I am confident enough yet to work with cattle, yet there again, I work with 3 large young cobs, which are a nightmare, so I suppose I could manage, what worries me is that I don't have anything indoors, which with Cattle, I think I need, If a sheep fell ill or I had an orphan yard I got a close family friend who a livery yard in gower which I could keep a ill sheep, not so much cows though. Do you reckon I'd need an indoor space? Thanks for providing with her e-mail, I have seen her name pop up else about conservation as well.